62.5. Examples
The
PostgreSQL
source distribution includes
several examples of index methods implemented using
GiST
. The core system currently provides text search
support (indexing for
tsvector
and
tsquery
) as well as
R-Tree equivalent functionality for some of the built-in geometric data types
(see
src/backend/access/gist/gistproc.c
). The following
contrib
modules also contain
GiST
operator classes:
-
btree_gist -
B-tree equivalent functionality for several data types
-
cube -
Indexing for multidimensional cubes
-
hstore -
Module for storing (key, value) pairs
-
intarray -
RD-Tree for one-dimensional array of int4 values
-
ltree -
Indexing for tree-like structures
-
pg_trgm -
Text similarity using trigram matching
-
seg -
Indexing for " float ranges "